期刊
PLANT PHYSIOLOGY AND BIOCHEMISTRY
卷 40, 期 6-8, 页码 537-548出版社
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/S0981-9428(02)01414-6
关键词
ascorbate; cell growth; cell cycle; dehydroascorbate; dehydroascorbate reductase; glutathione; redox status
Besides the implication of ascorbate and glutathione in the defence against oxidative stress, these two compounds are involved in plant growth and cell cycle control. Ascorbate metabolism is closely linked to the development of embryos and seedlings. Furthermore, ascorbate stimulates cell cycle activity in competent cells, while the oxidised form, dehydroascorbate, blocks normal cell cycle progression. Several possible mechanisms have been proposed to explain the effect of these compounds. The links between glutathione and the cell cycle are less clear. It has long been assumed that both compounds are closely linked by way of the Halliwell-Asada cycle. Any hypothesis concerning the pathways by which ascorbate or glutathione influence cell division, should take this connection into account. However, other mechanisms have been proposed for ascorbate-mediated cell cycle control, e.g. via the thioredoxin pathway. (C) 2002 Editions scientifiques et medicales Elsevier SAS. All rights reserved.
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